Magnitude of orbital angular momentum (L = √(ℓ(ℓ+1)) ħ)

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L = √(ℓ(ℓ+1)) ħ

What each symbol means

SymbolWhat it stands for
LOrbital AM magnitude
\ellAzimuthal quantum number (0,1,…,n-1)

When to use this

Single-electron QM; additive with spin for total J in advanced topics.